(Previous run was Petro Canada (PC) 0W30 for 4400 miles)
GC replaced by HDEO Esso XD 0W30
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GC 5k miles in GM 3.6L DI
- Thread starter 21Rouge
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(Previous run was Petro Canada (PC) 0W30 for 4400 miles)
GC replaced by HDEO Esso XD 0W30
In what way? TBN is toast. Visc is deep into SAE 20. GC did a lot better.
Be interesting to see how GC compares to an HDEO in this app.
Be interesting to see how GC compares to an HDEO in this app.
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I think there was ONE of these engines that actually had a (more or less) normal UOA. It was so strikingly counter to what we consider typical for this engine that I pondered if the other units we've seen need some reflash of the ECM/PCM.
What did the OLM read?
What did the OLM read?
The GC did much better in regards to sheering and TBN. But wasn't the previous run a Winter run and the GC a Spring/Summer run? That might be a big factor with fuel dilution and TBN. I would think 0W30 would be a poor choice outside of cold winter operation and for short OCI. The fuel dilution and the intake deposits of DI engines seems to be due to VII, so a 5W30 or 10W30 synthetic might fair better.
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Originally Posted By: tig1
Even though GM engines often show higher metals, what benefit is there in DI engines over ported FI if there is more fuel delution?
We're probably entering into a neo Dark Ages like we had in the pre-catalyst 73-74 pollution control methods. Idle mixtures were richened up and Air Injection Reactor pumps were installed. Nasty time for (I think) SE oil.
I believe we're seeing the same thing here, except with catalysts.
Even though GM engines often show higher metals, what benefit is there in DI engines over ported FI if there is more fuel delution?
We're probably entering into a neo Dark Ages like we had in the pre-catalyst 73-74 pollution control methods. Idle mixtures were richened up and Air Injection Reactor pumps were installed. Nasty time for (I think) SE oil.
I believe we're seeing the same thing here, except with catalysts.
Originally Posted By: Colt45ws
In what way? TBN is toast. Visc is deep into SAE 20. GC did a lot better.
Be interesting to see how GC compares to an HDEO in this app.
PC was a winter run. 2.3% fuel according to his blackstone report. TBN and viscosity held up better because GC didn't have so much fuel in it.
In what way? TBN is toast. Visc is deep into SAE 20. GC did a lot better.
Be interesting to see how GC compares to an HDEO in this app.
PC was a winter run. 2.3% fuel according to his blackstone report. TBN and viscosity held up better because GC didn't have so much fuel in it.
Originally Posted By: TTK
Seems like an awful lot of iron in both cases, especially for 5k miles.
For sure. But might it be the case that some of this iron is residual from the previous higher iron count from the immediately preceding OCI?
Looking at the glass half full, no wear #s went up as compared to the previous OCI even though there were approximately 600 more miles in this interval.
As well the lack of shear this time is promising. If I look at a UOA from a similar period a year ago there was significant shear with just trace fuel detected.
And finally TBN held well with the GC.
Seems like an awful lot of iron in both cases, especially for 5k miles.
For sure. But might it be the case that some of this iron is residual from the previous higher iron count from the immediately preceding OCI?
Looking at the glass half full, no wear #s went up as compared to the previous OCI even though there were approximately 600 more miles in this interval.
As well the lack of shear this time is promising. If I look at a UOA from a similar period a year ago there was significant shear with just trace fuel detected.
And finally TBN held well with the GC.
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Originally Posted By: Gary Allan
What did the OLM read?
55% with the interval being about 3.5 months.
What did the OLM read?
55% with the interval being about 3.5 months.
Rouge are you sure that, with all that iron, someone isn't selling you M1 in other bottles?
Still going to try Duron after the Esso?
Originally Posted By: cp3
Still going to try Duron after the Esso?
Nope. I am confident that the XD is at least the equal of the Duron.
Still going to try Duron after the Esso?
Nope. I am confident that the XD is at least the equal of the Duron.
Originally Posted By: 21Rouge
Originally Posted By: cp3
Still going to try Duron after the Esso?
Nope. I am confident that the XD is at least the equal of the Duron.
So you're going to stick with the XD-3 after this?
Any warranty concerns?
Originally Posted By: cp3
Still going to try Duron after the Esso?
Nope. I am confident that the XD is at least the equal of the Duron.
So you're going to stick with the XD-3 after this?
Any warranty concerns?
Originally Posted By: Gary Allan
Originally Posted By: tig1
Even though GM engines often show higher metals, what benefit is there in DI engines over ported FI if there is more fuel delution?
We're probably entering into a neo Dark Ages like we had in the pre-catalyst 73-74 pollution control methods. Idle mixtures were richened up and Air Injection Reactor pumps were installed. Nasty time for (I think) SE oil.
I believe we're seeing the same thing here, except with catalysts.
I think you are right. Another example of engineneering gone astray.
Originally Posted By: tig1
Even though GM engines often show higher metals, what benefit is there in DI engines over ported FI if there is more fuel delution?
We're probably entering into a neo Dark Ages like we had in the pre-catalyst 73-74 pollution control methods. Idle mixtures were richened up and Air Injection Reactor pumps were installed. Nasty time for (I think) SE oil.
I believe we're seeing the same thing here, except with catalysts.
I think you are right. Another example of engineneering gone astray.
Originally Posted By: addyguy
Originally Posted By: 21Rouge
Originally Posted By: cp3
Still going to try Duron after the Esso?
Nope. I am confident that the XD is at least the equal of the Duron.
So you're going to stick with the XD-3 after this?
Any warranty concerns?
XD is in there now. I have lots of 'warranty approved' oil in my stash, with receipts, to allow me to sleep at night.
Originally Posted By: 21Rouge
Originally Posted By: cp3
Still going to try Duron after the Esso?
Nope. I am confident that the XD is at least the equal of the Duron.
So you're going to stick with the XD-3 after this?
Any warranty concerns?
XD is in there now. I have lots of 'warranty approved' oil in my stash, with receipts, to allow me to sleep at night.
Originally Posted By: badtlc
That previous UOA was not just a "trace" of fuel. That was serious fuel dilution. I wish there was a flash point for both.
340 for the Petro Canada 0W30
385 for this run of GC
That previous UOA was not just a "trace" of fuel. That was serious fuel dilution. I wish there was a flash point for both.
340 for the Petro Canada 0W30
385 for this run of GC
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